Adjustable lighting fixture



FIG. 1 is a perspective view of the claimed design;

FIG. 2 is an alternative perspective view of the claimed design;

FIG. 3 is a front elevation view of FIG. 1;

FIG. 4 is a back elevation view of FIG. 1;

FIG. 5 is a right side elevation of FIG. 1;

FIG. 6 is a left side elevation of FIG. 1;

FIG. 7 is a top plan view of FIG. 1; and,

FIG. 8 is a bottom plan view of FIG. 1.

The broken lines show portions of an adjustable lighting fixture that form no part of the claimed design. 

CLAIM The ornamental design for an adjustable lighting fixture, as shown and described. 